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Dima020 [189]
3 years ago
7

How many atoms of Pb are there?

Chemistry
2 answers:
natta225 [31]3 years ago
5 0

Answer:

82, I believe.

Explanation:

Helen [10]3 years ago
3 0

Answer:

56

Explanation:

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What happens to valence electrons in metals?
Marrrta [24]
During a chemical reaction , the metal atom will donate its valence electrons to form a positively charged ion (cation) and also to attain the stable octet electron arrangement.
3 0
3 years ago
_______ is the amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Kelvin. A. A calorie B. En
Maksim231197 [3]
<h2>The required option d) "specific heat" is correct.</h2>

Explanation:

  • To raise the temperature of any substance or material of certain mass to respective temperature it requires some amount of heat.
  • Specific heat is the amount of heat necessary to raise the temperature of the substance of 1 gram to 1 Kelvin.
  • It is the amount of heat which is required to raise the temperature per unit mass to per unit temperature.
  • Thus, the required "option d) specific heat" is correct.
5 0
3 years ago
2. Find the empirical formula for a compound which contains 32.8% chromium and 67.2%<br> chlorine.
Blababa [14]

The empirical formula is CrCl₃.

Explanation:

To find the empirical formula we use the following algorithm.

We divide each percentage by the atomic weight of each element:

for Cr   32.8 / 52 = 0.63

for Cl   67.2 / 35.5 = 1.89

The result will be divined by the smallest number:

for Cr    0.63 / 0.63 = 1

for Cl     1.89 / 0.63 = 3

The empirical formula is CrCl₃.

Learn more about:

empirical formula

brainly.com/question/5834630

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#learnwithBrainly

6 0
4 years ago
How many atoms does the formula 2HgO have?
yKpoI14uk [10]

Answer:

4

Explanation:

2HgO

2 * 1 Hg atom = 2 Hg atoms

2 * 1 O atom = 2 O atoms

2+2 = 4 atoms total

3 0
3 years ago
How many atoms are present in 591 grams of gold Au​
Lady_Fox [76]

Answer:

See the image that I attached.

Explanation:

8 0
3 years ago
Read 2 more answers
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